Thread: New to me BBC

Tweet

Well, first of all, you need to find out what you have. It could be any of the following:
366 CID tall deck truck motor (small bore (3.935"), pretty much worthless except for scrap iron value unless you need to power up a school bus or dump truck Not much of a base to begin a performance build. (Maybe save the 3.76" steel crank for a 396, 402 or 427 build)
427 CID tall deck truck motor
396 CID short deck
402 CID short deck
427 CID short deck
454 CID short deck
Check the casting number on the rear of the block, driver's side....
http://chevellestuff.net/qd/images/e...2406_block.jpg
and a head casting number under the valve cover.

A quick visual is to look at the water pump inlet runners and where they come into the block. Short deck engines, the top water pump bolt hole to the block is at the deck.
Tall deck blocks have the block deck 3/4 inch higher than the top of the water pump bolt hole.
Here's a tall deck block.....
http://smhttp.47591.nexcesscdn.net/8...estalldeck.jpg
Here's a short deck block....
http://home.earthlink.net/~kaneofthe...ankchebbyb.jpg

.